4 Songs We've Totally Heard Before

Raise your hand if you loved dancing to "Starships," by Nicki Minaj, last summer. The song set a Billboard record for its stretch of 21 consecutive weeks in the Top 10, but as it turns out, it might not belong to her Minajesty.

-Lady Gaga faced backlash for "Born This Way," with critics saying it sounded too similar to Madonna's 1989 chart-topper, "Express Yourself." About the song, Madonna commented, "When I heard it on the radio, I said, 'That sounds very familiar.'"